CN110676726A - Water photovoltaic substation and its substation box - Google Patents

Abstract

The invention relates to an aquatic photovoltaic substation and its substation box. The substation box body includes a box body, a ventilation plate and a rainproof structure. The box body includes a top plate, a bottom plate opposite to the top plate, and a side plate connecting the top plate and the bottom plate. The top plate, the bottom plate and the side plate are surrounded to form a receiving cavity. The side plate is provided with an opening which is communicated with the accommodating cavity. The vent plate is mounted on the edge of the opening and covers at least part of the opening. The ventilation plate is provided with a plurality of ventilation holes which are communicated with the accommodating cavity. The opening of the vent hole located on the outer surface of the vent plate is disposed toward the bottom plate. The rainproof structure is installed on the edge of the opening close to one end of the top plate. The rain shielding structure protrudes from the outer surface of the ventilation plate facing away from the accommodating cavity. Therefore, the above-mentioned substation box has good waterproof performance and heat dissipation effect. Therefore, the probability of damage to the electronic devices in the substation box is reduced, and the reliability of the floating photovoltaic substation is higher.

Description

Water photovoltaic substation and its substation box

technical field

The invention relates to the technical field of new energy water photovoltaic power generation, in particular to a water photovoltaic substation and its substation box.

Background technique

As an emerging power generation mode, photovoltaic power generation is generally used in areas with abundant light resources, usually including mountain photovoltaics, coal mining subsidence photovoltaics, pond photovoltaics (fishing and light complementary), water photovoltaics, and farmland photovoltaics (agricultural photovoltaics). complementary) and other terrestrial photovoltaics, etc.

The booster box transformers used in domestic floating photovoltaics are usually American transformers (combined transformers) and small-capacity European transformers (pre-installed substations). The transformers are oil-immersed transformers or dry-type transformers. The transformer body is enclosed and installed in the box.

However, since the transformer will generate a lot of heat during the working process, especially the large-capacity transformer, the heat generated during operation is more, and the transformer is enclosed and installed in the box, it is easy to cause a lot of heat to accumulate inside the box. The more heat accumulated inside the box and the longer the accumulation time, the greater the probability of damage to the transformers and other components installed in the box, which greatly affects the reliability of the floating photovoltaic substation.

SUMMARY OF THE INVENTION

Based on this, it is necessary to provide a highly reliable floating photovoltaic substation and its substation box in order to solve the problem that the reliability of the floating photovoltaic transformer is not high due to the poor heat dissipation effect of the traditional substation box.

A substation box, comprising:

The box body includes a top plate, a bottom plate opposite to the top plate, and a side plate connecting the top plate and the bottom plate, the top plate, the bottom plate and the side plate are surrounded to form a receiving cavity, and the side plate an opening communicated with the receiving cavity is provided;

A ventilation plate is installed on the edge of the opening and covers at least part of the opening, and the ventilation plate is provided with a plurality of ventilation holes communicating with the receiving cavity, and the ventilation holes are located outside the ventilation plate the opening in the surface is disposed towards the base plate; and

The rain shielding structure is installed on the edge of the opening close to one end of the top plate, and the rain shielding structure protrudes from the outer surface of the ventilation plate facing away from the receiving cavity.

In one embodiment, the two openings are respectively opened in two opposite regions of the side plate, and the ventilation plate is installed on the edge of each of the openings.

In one embodiment, the ventilation plate covers part of the opening, and the ventilation plate is fixedly connected with the bottom plate.

In one of the embodiments, the ventilation plate is a louver plate.

In one embodiment, a first partition plate and a second partition plate are arranged at intervals in the receiving cavity to divide the receiving cavity into a first cavity, a second cavity and a third cavity. The plate is provided with the opening communicating with the second chamber.

In one embodiment, a first door opening communicated with the second chamber is opened on the ventilation plate, and the substation box further includes a transformer door installed in the first door opening;

The side plate is also provided with a second door opening communicating with the third chamber and a third door opening communicating with the first chamber, and the substation box body further includes a door installed in the second door opening. A high-pressure door and a low-pressure door installed in the third door opening.

In one embodiment, the side plate includes an outer layer plate, a heat insulation plate and an inner layer plate that are stacked in sequence, and the outer layer plate is located on the side of the partition plate facing away from the receiving cavity, The inner layer board is located on the side of the heat insulation board facing the receiving cavity.

In one embodiment, the outer layer board is a corrugated board.

An aquatic photovoltaic substation, comprising:

substation boxes; and

The low-voltage cabinet, the transformer and the low-voltage cabinet are all accommodated and installed in the accommodating cavity.

In one embodiment, the transformer is an oil-immersed transformer, and the floating photovoltaic substation further includes an oil collecting device accommodated and installed in the accommodating cavity and an oil-water treatment device disposed outside the substation box, The oil collecting device is located between the oil-immersed transformer and the bottom plate, and an oil collecting tank is opened at one end of the oil collecting device toward the oil-immersed transformer, and an oil-water separator is arranged in the oil-water treatment device. And the oil-water separator is communicated with the oil collecting tank.

In the above-mentioned floating photovoltaic substation and its substation box, the high-voltage cabinet, the transformer and the low-voltage cabinet are accommodated and installed in the accommodating cavity, so as to constitute the floating photovoltaic substation. When the floating photovoltaic substation works, even if a large amount of heat is generated by the transformer located in the containment cavity, the heat will be rapidly and continuously dissipated to the outside of the substation box through the ventilation holes on the ventilation plate or the uncovered part of the opening. It avoids the accumulation of heat in the substation box, so that the substation box has a better heat dissipation effect. In addition, since the opening of the vent hole on the outer surface of the vent plate is arranged toward the bottom plate, the water falling on the outer surface of the vent plate cannot easily enter the substation box through the vent hole, which effectively improves the waterproof performance of the substation box. The rain-blocking structure can block the ventilation plate and the uncovered part of the opening. Even if it encounters rainy weather or a lot of falling water, the rain-blocking structure can also reduce the entry of rainwater through the ventilation holes and the uncovered part of the opening. The probability in the substation box further improves the waterproof performance of the substation box. Therefore, the above-mentioned substation box has good waterproof performance and heat dissipation effect. Therefore, the probability of damage to the electronic devices in the substation box is reduced, and the reliability of the floating photovoltaic substation is higher.

Description of drawings

1 is a front view of a water photovoltaic substation in a preferred embodiment of the present invention;

Fig. 2 is a top view of the floating photovoltaic substation shown in Fig. 1;

FIG. 3 is a front view of the substation box in the floating photovoltaic substation shown in FIG. 1;

FIG. 4 is a top view of the substation box shown in FIG. 3;

Figure 5 is a side view of the substation box shown in Figure 3;

Fig. 6 is the structural schematic diagram of the ventilation plate in the substation box shown in Fig. 3;

FIG. 7 is a partial enlarged view of the substation box shown in FIG. 3 .

Detailed ways

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the related drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that a thorough and complete understanding of the present disclosure is provided.

It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for illustrative purposes only.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to FIG. 1 and FIG. 2 , the present invention provides a floating photovoltaic substation 10 and a substation box 100 thereof. The floating photovoltaic substation 10 includes a substation box 100 , a high-voltage cabinet 200 , a transformer 300 and a low-voltage cabinet 400 .

The substation box 100 has a hollow structure. The high voltage cabinet 200 , the transformer 300 and the low voltage cabinet 400 are all accommodated and installed in the substation box 100 . The transformer 300 may be an oil-immersed transformer or a dry-type transformer. Generally, the high-voltage cabinet 200 and the low-voltage cabinet 400 are located on two sides of the transformer 300 respectively.

It can be understood that the above-mentioned substation box 100 can also be applied to other prefabricated substations, such as mountain photovoltaic substations, coal mining subsidence photovoltaic substations, pond photovoltaic substations, farmland photovoltaic substations or hydropower substations, thermal power substations, nuclear power substations, etc. .

Please also refer to FIG. 3 , the substation box 100 in the preferred embodiment of the present invention includes a box body 110 , a ventilation plate 120 and a rain shielding structure 130 .

Please also refer to FIG. 4 , the box body 110 includes a top plate 111 , a bottom plate 112 disposed opposite to the top plate 111 , and a side plate 113 connecting the top plate 111 and the bottom plate 112 . The top plate 111 , the bottom plate 112 and the side plate 113 are surrounded to form a receiving cavity 114 . The side plate 113 is provided with an opening 117 communicating with the receiving cavity 114 .

Specifically, the number of openings 117 opened on the side plate 113 may be one or two. When there is one opening 117, the accommodating cavity 111 becomes an open cavity structure with the opening 117 on one side; when there are two openings 117, the two openings 117 are located on opposite sides of the accommodating cavity 111, so that the accommodating cavity 111 It becomes an open chamber structure with openings 117 at opposite ends.

Referring to FIGS. 2 and 4 again, in the floating photovoltaic substation 10 , the low-voltage cabinet 400 , the transformer 300 and the high-voltage cabinet 200 are all accommodated and installed in the accommodating cavity 114 .

In this embodiment, the top plate 111 and the side plate 113 are detachably connected. Thus, the top plate 111 of the box body 110 is detachable. During the installation process of the low-voltage cabinet 400 , the transformer 300 and the high-voltage cabinet 200 , the low-voltage cabinet 400 , the transformer 300 and the high-voltage cabinet 200 are usually moved into the receiving cavity 114 by means of forklift or manual transportation, and then installed. However, for some low-voltage cabinets 400, transformers 300 and high-voltage cabinets 200 that are relatively large in volume and weight, it is time-consuming and laborious to install the low-voltage cabinet 400, high-voltage cabinet 200 and transformer 300 using conventional installation methods such as forklifts or manual handling. more difficult. Therefore, the top of the box body 110 is set as a detachable structure. When large electronic equipment such as the low-voltage cabinet 400, the transformer 300, and the high-voltage cabinet 200 need to be installed in the substation box 100, the top plate 111 only needs to be removed from the box body 110. After disassembling, the large electronic equipment such as the low-voltage cabinet 400 , the high-voltage cabinet 200 , and the transformer 300 can be hoisted from the top of the box body 110 by a crane. Therefore, the top plate 111 is provided as a detachable structure, which makes the processing of the floating photovoltaic substation 10 easier.

Please also refer to FIG. 5 , the ventilation plate 120 is installed on the edge of the opening 117 and covers at least part of the opening 117 . The ventilation plate 120 is fixedly connected with the bottom plate 112 .

Specifically, the positional relationship between the ventilation plate 120 and the opening 117 includes the following two situations: the first situation is that the ventilation plate 120 completely covers the opening 117, and the height of the ventilation plate 120 is the same as the height of the opening 117 at this time; the second situation Therefore, the ventilation plate 120 only covers the part of the opening 117. At this time, the height of the ventilation plate 120 is smaller than the height of the opening 117, so that the second chamber containing cavity 114 forms an open cavity structure, so that the transformer 300 in the containing cavity 114 is formed. The heat generated during operation can be dissipated to the outside of the substation box 100 through the uncovered opening 117 , which effectively reduces the probability that a large amount of heat accumulates in the receiving cavity 114 .

Please also refer to FIG. 6 , the ventilation plate 120 defines a plurality of ventilation holes 121 communicating with the receiving cavity 114 . The ventilation plate 120 may be a louver plate, a mesh plate, or the like. Therefore, when the transformer 300 in the accommodating cavity 114 generates a large amount of heat, the heat can be transferred to the outside of the substation box 100 through the ventilation holes 121 , further reducing the probability that a large amount of heat accumulates in the accommodating cavity 114 . Therefore, the arrangement of the ventilation plate 120 makes the heat dissipation effect of the substation box 100 better, thereby making the reliability of the floating photovoltaic substation 10 higher.

Moreover, the opening of the ventilation hole 121 on the outer surface of the ventilation plate 120 is disposed toward the bottom plate 112 . . When the above-water photovoltaic substation 10 is located on the horizontal plane, the opening of the ventilation hole 121 on the outer surface of the ventilation plate is set downward, so the water falling on the outer surface of the ventilation plate 120 cannot easily enter the receiving cavity 114 from the ventilation hole 121, which greatly reduces the The probability of the water falling on the outer surface of the ventilation plate 120 entering the receiving cavity 114 through the ventilation holes 121 is reduced, and the waterproof performance of the substation box 100 and the floating photovoltaic substation 10 is effectively improved. Specifically, in this embodiment, the ventilation plate 120 is a louver orifice plate.

Please refer to FIG. 3 and FIG. 4 again, in this embodiment, two openings 117 are respectively opened in two opposite regions of the side plate 113 . A vent plate 120 is mounted on the edge of each opening 117 . Specifically, at least one ventilation plate 120 is installed on the edge of each opening 117 . Therefore, the two openings 117 are respectively located on opposite sides of the receiving cavity 114 . The outside air can be convected in the receiving cavity 117 through the two opposite openings 117 , so that the heat dissipation rate in the receiving cavity 114 is faster, and the heat dissipation effect of the substation box 100 is further improved.

Referring to FIG. 3 again, in this embodiment, the ventilation plate 120 covers part of the opening. The ventilation plate 120 is fixedly connected with the bottom plate 112 . When the floating photovoltaic substation 10 is placed on a horizontal surface, the height of the ventilation plate 120 is smaller than the height of the opening 117 . Therefore, part of the opening 117 near the top plate 111 is not covered by the air-permeable plate 120, so the accommodating cavity 114 has an open cavity structure, so that part of the heat in the accommodating cavity 114 is dissipated through the part of the opening 117 not covered by the air-permeable plate 120 , which further improves the heat dissipation speed in the receiving cavity 114 and further improves the heat dissipation efficiency of the substation box 100 .

Please refer to FIG. 3 and FIG. 5 again, the rain shielding structure 130 is installed on the edge of the opening 117 close to one end of the top plate 111 . The rain shielding structure 130 protrudes from the outer surface of the ventilation plate 120 facing away from the receiving cavity 114 . The rain shielding structure 130 can be a canopy structure installed on the edge of the opening 117 near one end of the top plate 111 , or can be a strip-shaped plate structure fixed on the outer surface of the box body 110 . In addition, the rain shielding structure 130 may be fixedly connected to the edge of the opening 117 , or may be movably connected to the edge of the opening 117 .

When the floating photovoltaic substation 10 is located on a horizontal plane, the rain shielding structure 130 can shield the ventilation plate 120 and some openings 117 not covered by the ventilation plate 120 . The probability of external water entering the substation box 110 through the ventilation port 121 of the ventilation plate 120 or the partial opening 117 not covered by the ventilation plate 120 is reduced, and the waterproof performance of the substation box 100 is further improved.

In this embodiment, the rain shielding structure 130 is inclined relative to the side plate 113 in a direction toward the bottom plate 112 . As a result, the water falling on the rain shielding structure 130 can quickly slide down from the rain shielding structure 130 to the ground under the action of its own gravity, which greatly reduces the probability of water accumulation on the top of the rain shielding structure 130 and further improves the The waterproof performance of the substation box 100 further improves the reliability of the large-capacity floating photovoltaic substation 10 .

Therefore, the above-mentioned substation box 100 has good waterproof performance and good heat dissipation effect, thereby reducing the probability of damage to the electronic devices in the substation box 100, and making the floating photovoltaic substation 10 more reliable.

Please refer to FIG. 2 and FIG. 4 again. In this embodiment, a first partition plate 115 and a second partition plate 116 are arranged in the receiving cavity 114 at intervals to divide the receiving cavity 114 into a first cavity 1141 and a second cavity 1142 and the third chamber 1143. The side plate 113 is provided with an opening 117 communicating with the second chamber 1142 .

In the floating photovoltaic substation 10 , the low-voltage cabinet 400 , the transformer 300 and the high-voltage cabinet 200 are respectively accommodated and installed in the first chamber 1141 , the second chamber 1142 and the third chamber 1143 . Therefore, the low-voltage cabinet 400 , the transformer 300 and the high-voltage cabinet 200 have separate working spaces, respectively, which is beneficial for the operator to operate the low-voltage cabinet 400 , the transformer 300 and the high-voltage cabinet 200 independently, so that the operation of the floating photovoltaic substation 10 is facilitated. Simpler. Moreover, the accommodating cavity 114 is divided into the individual first cavity 1141 , the second cavity 1142 and the third cavity 1143 , so that the components in the floating photovoltaic substation 10 are arranged more neatly.

Please refer to FIG. 4 and FIG. 5 again. Further, in this embodiment, the ventilation plate 120 is provided with a first door hole 122 that communicates with the second chamber 1142 . The substation box 100 further includes a transformer door 160 installed in the first door opening 122 . Wherein, the transformer door 160 may be a mesh panel or a louvered perforated panel or the like.

The side plate 113 is also provided with a second door hole 1131 communicating with the third chamber 1143 and a third door hole 1132 communicating with the first chamber 1141 . The substation box 100 further includes a high voltage door 140 installed in the second door opening 1131 and a low voltage door 150 installed in the third door opening 1132 .

Therefore, during the actual use of the floating photovoltaic substation 10, the operator needs to enter the third chamber 1143, the first chamber 1141 and the second chamber 1142 for operation and maintenance work, and the operator only needs to open the high-voltage door at this time. 140 , the low-voltage door 150 or the transformer door 160 can enter the third chamber 1143 , the first chamber 1141 or the second chamber 1142 . Therefore, the arrangement of the high voltage gate 140 , the low voltage gate 150 and the transformer gate 160 makes the use of the floating photovoltaic substation 10 more convenient.

Further, in this embodiment, the low pressure door 150 is provided with a shutter 151 . Since the low-voltage cabinet 400 generates very little heat during operation, the heat dissipation requirements of the first chamber 1141 can be met by the shutters 151 disposed on the low-voltage door 150 . Therefore, the arrangement of the shutters 151 can quickly dissipate the heat in the first chamber 1141 , which further improves the heat dissipation effect of the substation box 100 .

Please also refer to FIG. 7 , in this embodiment, the side plate 113 includes an outer layer plate 1133 , a heat insulation plate 1134 and an inner layer plate 1135 which are stacked in sequence. The inner layer board 1135 is located on the side of the thermal insulation board 1134 facing the receiving cavity 114 , and the outer layer board 1133 is located on the side of the thermal insulation board 1134 facing away from the receiving cavity 114 . The thermal insulation board 1134 mainly plays the role of thermal insulation, and is usually made of materials with good thermal insulation performance, such as thermal insulation rock wool, glass wool, and expanded pearl edges.

Therefore, the disposition of the heat insulating plate 1134 effectively improves the thermal insulation performance of the side plate 113 . If the outside air temperature is too high, the high temperature around the substation box 100 will be transmitted to the first chamber 1141 and the third chamber 1143 through the side plate 113 , thereby affecting the electrons in the first chamber 1141 and the third chamber 1143 Equipment operation and service life. Therefore, arranging the side plate 113 as the outer layer plate 1133 , the heat insulation plate 1134 and the inner layer plate 1135 arranged in sequence can greatly reduce the transfer of high temperature in the surrounding environment of the substation box 100 to the third chamber 1143 through the side plate 113 and the probability in the first chamber 1141 , thereby ensuring relatively stable operation in the first chamber 1141 and the third chamber 1143 , and further improving the reliability of the floating photovoltaic substation 10 .

Further, in this embodiment, the outer layer board 1133 is a corrugated board. Since the corrugated board is a profiled board, it has the characteristics of light weight and high strength. Therefore, setting the outer layer board 1133 as a corrugated board not only makes the side board 113 have the advantages of light weight and high strength. The light weight can make the substation box 100 lighter, and the higher strength can make the substation box 100 have higher strength, which can effectively prolong the service life of the substation box 100 .

Please refer to FIG. 1 again. In this embodiment, the transformer 300 is an oil-immersed transformer 300 . The floating photovoltaic substation 10 further includes an oil collecting device 500 accommodated and installed in the accommodating cavity 114 , and an oil-water treatment device 600 disposed outside the substation box 100 . Specifically, the oil collecting device 500 is accommodated and installed in the second chamber 1112 . The oil collecting device 500 is located between the oil-immersed transformer 300 and the bottom plate 112 . One end of the oil collecting device 500 facing the oil-immersed transformer is provided with an oil collecting tank (not shown). An oil-water separator (not shown) is provided in the oil-water treatment device 600 . The oil-water separator is communicated with the oil collecting tank.

After the floating photovoltaic substation 10 is used for a long time, oil leakage of the oil-immersed transformer and outside water entering the substation box 100 will inevitably occur. Since the floating photovoltaic substation 10 is built above the water surface, the oil-immersed transformer 300 The leaking insulating oil can easily fall into the water, which will cause serious pollution to the water quality. The oil collecting tank can first collect the insulating oil leaked from the oil-immersed transformer 300 and the water entering the substation box 100 to form an oil-water mixture, and then transport the oil-water mixture to the oil-water separator of the oil-water treatment device 600 to These oil-water mixtures are discharged after subsequent treatment (eg, oil-water separation, etc.), so that the occurrence of oil pollution pollution of water quality is avoided, and the floating photovoltaic substation 10 is more environmentally friendly.

Please refer to FIG. 1 and FIG. 4 again. Further, in this embodiment, the bottom plate 112 is provided with an oil guide hole 1121 that communicates with the receiving cavity 114 . The floating photovoltaic substation 10 further includes an oil guide pipe (not shown in the figure) passing through the oil guide hole 1121 , and the two ends of the oil guide pipe are respectively communicated with the oil collecting tank and the oil-water separator. A control valve (not shown) is installed on the oil guide pipe. Among them, the control valve can be opened and closed manually, or it can be opened and closed automatically periodically. Therefore, by controlling the setting of the valve, the oil-water mixture can be accumulated in the oil collecting tank to a certain amount, and then exported to the oil-water treatment device 600 for treatment and discharge, thereby making the use of the floating photovoltaic substation 10 more convenient.

In this embodiment, an inspection window 1111 is provided on the top plate 111 . The inspection window 1111 can be a window that can be opened and closed, or can be a transparent plate with better light transmission performance. In actual use, the inspection window 1111 can be used to observe the situation in the transmission chamber, especially the collection of oil-water mixture and the accumulation of oil-water mixture in the oil collecting tank of the oil collecting device 500, so as to facilitate the operator to open or close the control valve, The convenience of use of the floating photovoltaic substation 10 is further improved.

In this embodiment, the high-voltage cabinet 200 is a gas-filled cabinet. As a new generation of switchgear, the inflatable cabinet has the characteristics of compact structure, flexible operation, and reliable interlocking. Therefore, the high-voltage cabinet 200 is set as an inflatable cabinet, which effectively reduces the volume of the high-voltage cabinet 200, thereby reducing the size of the water photovoltaic substation 10 volume of.

Please refer to FIG. 2 again. Further, in this embodiment, the low-voltage cabinet 400 includes a first low-voltage cabinet 410 , a second low-voltage cabinet 420 and a communication control cabinet 430 . The first low-voltage cabinet 410 , the second low-voltage cabinet 420 and the communication control cabinet 430 form a “two-to-one” arrangement in the direction from the second chamber 1142 to the first chamber 1141 . Specifically, the first low-voltage cabinet 410 and the second low-voltage cabinet 420 are both located at one end of the first chamber 1141 close to the second chamber 1142 , and the first low-voltage cabinet 410 and the second low-voltage cabinet 420 are respectively connected to the first partition 116 . The distances are the same to form the "two" in the "two-one" arrangement; the communication control cabinet 430 is located at the end of the first chamber 1141 away from the second chamber 1142 to form the "one" in the "two-one" arrangement. Therefore, the first low-voltage cabinet 410, the second low-voltage cabinet 420 and the communication control cabinet 430 are arranged in a "two-one" arrangement, which is different from the arrangement of the first low-voltage cabinet 410, the second low-voltage cabinet 420 and the communication control cabinet in the prior art. Compared with the way that the 430 are arranged in a "one" shape in sequence, the volume of the substation box 100 is greatly reduced, and the volume of the floating photovoltaic substation 10 is further reduced.

In this embodiment, the floating photovoltaic substation 10 further includes a lighting device 700 disposed in the first chamber 1141 and the third chamber 1143 . Compared with the second chamber 1142, the first chamber 1141 and the third chamber 1143 are closed chamber structures, so the light in the first chamber 1141 and the third chamber 1143 is relatively dark, especially in the case of rainy weather In weather or at night, the light in the first chamber 1141 and the third chamber 1143 will be darker. In order to have a better working environment, the operator needs to hold a lighting tool (such as a flashlight, etc.) work, very inconvenient. Therefore, the installation of the lighting device 700 only requires the operator to turn on the lighting device 700 to obtain a working environment with better light in the first chamber 1141 and the third chamber 1143, which makes the use of the floating photovoltaic substation 10 more efficient. convenient.

In the above-mentioned floating photovoltaic substation 10 and its substation box 100 , the high-voltage cabinet 200 , the transformer 300 and the low-voltage cabinet 400 are all accommodated and installed in the accommodation cavity 114 to constitute the floating photovoltaic substation 10 . When the floating photovoltaic substation 10 is in operation, even if the transformer 300 in the receiving cavity 114 generates a large amount of heat during operation, the heat will rapidly and continuously pass through the ventilation holes 121 on the ventilation plate 120 or the partial openings 117 that are not blocked. Dissipating to the outside of the substation box 100 effectively avoids the accumulation of heat in the substation box 100 , so that the substation box 100 has a better heat dissipation effect. In addition, since the opening of the vent hole 121 on the outer surface of the vent plate 120 is disposed toward the bottom plate 112, the water falling on the outer surface of the vent plate 120 cannot easily enter the substation box 100 through the vent hole 121, which effectively improves the substation box. waterproof performance of the body 100 . The rain shielding structure 130 can shield the ventilating plate 120 and the uncovered part of the opening 117 . Even in the case of rainy weather or a large amount of water falling, the rain shielding structure 130 can also reduce the amount of rainwater passing through the vent hole 121 and the uncovered part of the opening 117 . The probability of the covered part of the opening 117 entering the substation box 100 further improves the waterproof performance of the substation box 100 . Therefore, the above-mentioned substation box 100 has better waterproof performance and heat dissipation effect, thereby reducing the probability of damage to the components in the substation box 100, so the reliability of the floating photovoltaic substation 10 is higher.

The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity, all possible combinations of the technical features in the above-described embodiments are not described. However, as long as there is no contradiction between the combinations of these technical features, All should be regarded as the scope described in this specification.

The above-mentioned embodiments only represent several embodiments of the present invention, and the descriptions thereof are specific and detailed, but should not be construed as a limitation on the scope of the invention patent. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can also be made, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims (10)

1. A substation box, comprising:

the box body comprises a top plate, a bottom plate and a side plate, wherein the bottom plate is arranged opposite to the top plate, the side plate is connected with the top plate and the bottom plate, the top plate, the bottom plate and the side plate are surrounded to form an accommodating cavity, and an opening communicated with the accommodating cavity is formed in the side plate;

the breathable plate is arranged at the edge of the opening and covers at least part of the opening, a plurality of breathable holes communicated with the accommodating cavity are formed in the breathable plate, and the openings of the breathable holes on the outer surface of the breathable plate are arranged towards the bottom plate; and

and the rain shielding structure is arranged at the edge of one end of the top plate close to the opening, and protrudes out of the air permeable plate back to the outer surface of the accommodating cavity.

2. The substation box according to claim 1, wherein the two openings are respectively opened in two opposite areas of the side plate, and the air-permeable plate is installed at the edge of each opening.

3. A substation box according to claim 1, wherein the gas permeable plate covers part of the opening and is fixedly connected to the base plate.

4. A substation box according to claim 1, wherein the gas permeable plate is a louvered plate.

5. The substation box body according to claim 1, wherein a first partition plate and a second partition plate are arranged in the accommodating cavity at intervals so as to divide the accommodating cavity into a first cavity, a second cavity and a third cavity, and the side plate is provided with the opening communicated with the second cavity.

6. The substation box body according to claim 5, wherein the ventilation plate is provided with a first door opening communicated with the second chamber, and the substation box body further comprises a transformer door arranged in the first door opening;

the transformer substation box body further comprises a high-pressure door arranged in the second door hole and a low-pressure door arranged in the third door hole.

7. The substation box body according to claim 1, wherein the side plate comprises an outer plate, a heat insulation plate and an inner plate which are sequentially stacked, the outer plate is located on one side of the heat insulation plate, which faces away from the accommodating cavity, and the inner plate is located on one side of the heat insulation plate, which faces towards the accommodating cavity.

8. A substation box according to claim 7, wherein the outer laminate is corrugated.

9. An overwater photovoltaic substation, comprising:

the substation enclosure of any one of claims 1 to 8; and

the low-voltage cabinet, the transformer and the low-voltage cabinet are all accommodated and installed in the accommodating cavity.

10. The overwater photovoltaic transformer substation of claim 9, wherein the transformer is an oil-immersed transformer, the overwater photovoltaic transformer substation further comprises an oil collecting device accommodated in the accommodating cavity and mounted in the accommodating cavity, and an oil-water treatment device arranged outside the transformer substation box, the oil collecting device is located between the oil-immersed transformer and the bottom plate, an oil collecting groove is formed in one end, facing the oil-immersed transformer, of the oil collecting device, an oil-water separator is arranged in the oil-water treatment device, and the oil-water separator is communicated with the oil collecting groove.

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